.mainpage{

}
.header{
  height: 100px;
  border: 1px solid #ccc;
  font-size: 30px;
  font-weight: bold;
  line-height: 100px;
  text-align: center;
}
.content{
  display: flex;
}
.content .aside{
  width: 300px;
  height: 400px;
  border: 1px solid #ccc;
}
.content .tableContent{
  flex: 1;
}
